Hardiness: USDA Zone 4a: to -34.4 °C (-30 °F) USDA Zone 4b: to -31.6 °C (-25 °F) USDA Zone 5a: to -28.8 °C (-20 °F) USDA Zone 5b: to -26.1 °C (-15 °F) USDA Zone 6a: to -23.3 °C (-10 °F) USDA Zone 6b: to -20.5 °C (-5 °F) USDA Zone 7a: to -17.7 °C (0 °F) USDA Zone 7b: to -14.9 °C (5 °F) USDA Zone 8a: to -12.2 °C (10 °F) USDA Zone 8b: to -9.4 °C (15 °F) USDA Zone 9a: to -6.6 °C (20 °F) USDA Zone 9b: to -3.8 °C (25 °F)
On Jun 24, 2011, Gascoigne from Shawnee Mission, KS (Zone 5a) wrote:
Gets the dreaded repeated clematis wilt in my garden...and no surprise, it's mother, Nelly Moser gets it also...to a much lesser extent...I have started a vitacella, 'Walenburg', next to 'Fireworks' so that when the nigh time come to rip out the dreaded tacky thing, Walenburg will rise to succession. It's obvious Fireworks wasn't my favorite....I'm a vitacella/viorna lover now and bought the Fireworks when I was naive because it looked exciting...and like everything else in the big box stores.
On May 2, 2008, ericabelle from West Plains, MO (Zone 6b) wrote:
When I first bought this plant, we were renting a house; so I had to plant it in a windowbox. Since then, it has performed beautifully for me in this windowbox; even living through summer drought and several ice storms. Finally, this year I will get to plant it in the ground!
On Oct 13, 2004, BUFFY690 from Prosperity, SC (Zone 7b) wrote:
COUNTRY OF ORIGIN : UNITED KINGDOM
DATE RAISED ; 1980
RAISED BY : JOHN TREASURE
PARANTAGE : 'NELLY MOSER' x 'MAUREEN'
EARLY LARGE FLOWERED GROUP
I have grouped this with my candidia white both of which are blooming right now. I can't wait to see them dripping off of the small dead dogwood I have them climbing next spring. 10/13/04
They did not climb as well as I wanted them to but I am going to trin it more up the other clematis vines this year, the flowers are huge and beautiful. Our weather has had some very strong winds and they have held up miraculously.4/23/05
This plant has been said to grow in the following regions:
Magnet Cove, Arkansas Gainesville, Florida Royston, Georgia Des Plaines, Illinois Dubuque, Iowa Lenexa, Kansas Gardiner, Maine Saginaw, Michigan Blaine, Minnesota Natchez, Mississippi Pinardville, New Hampshire Salem, New Hampshire Bridgewater, New Jersey Southold, New York Cary, North Carolina Greensboro, North Carolina Vale, North Carolina Albany, Oregon Mansfield, Pennsylvania Seven Oaks, South Carolina Knoxville, Tennessee Broaddus, Texas Eagle Mountain, Texas Hereford, Texas Victoria, Texas Willis, Texas